GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 TrailBlazer - 4WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Remote Function Schematics
Figure 1:

Keyless Entry
Object Number: 2082099 Size: FS
Figure 2:

Garage Door Opener - UG1
Object Number: 2082101 Size: FS